The stone lithophone of Khanh Son
The dan da Khanh Son is 12 tuned bars of rhyolite porphyry, in two groups of six, found by the family of Bo Bo Ren, a Raglai man, at Doc Gao near To Hap in the late 1970s and dated to about 2,500 to 3,000 years. A national treasure since 2024, it is kept in the provincial museum in Nha Trang; to hear stone played, go to Hon Dung village in Khanh Son.